<item>
  <title><?php echo htmlspecialchars($comment->title); ?></title>
  <link><?php echo $siteUrl; ?>/article/<?php echo $comment->article_id; ?>#comment-<?php echo $comment->id; ?></link>
  <author><?php echo strlen($comment->email) ? htmlspecialchars($comment->email) : 'anonymous@anonymous.com';?> (<?php echo htmlspecialchars($comment->author); ?>)</author>
  <description>
    <?php echo htmlspecialchars($comment->getContent()); ?>
  </description>
  <guid isPermaLink="true"><?php echo $siteUrl; ?>/article/<?php echo $comment->article_id; ?>#comment-<?php echo $comment->id; ?></guid>
  <pubDate><?php echo date($dateFormatRSS, $comment->posted); ?></pubDate>
</item>
